Oil burner



Oct- 18,1 H R WALKER OIL BURNER Filed Jan. 2 6, 1925 3 Sheets-Sheet. 1

75. War;

A; flip/fly; I

Oct. 18, H. R. WALKER OIL BURNER Filed Jan. 26, 1925 s Sheets-Sheet 2 Patented Oct. 18, 1927.

HAnnY,.-R.;wALKER, or s'r.. I.oUIs, MISSOURI.

7 011. BURNER.

Applicationr'flled January '.2 ;i ve i9 ;re1at t mpr em n in oil-bum ers and consistsin the novel ;conwtrmtio here a t di e e e An object of the -invention; is ,to provide,

ufin association with a fire pot and an; oil eham- -ber with; a system otoil-sfeedthereton; a devic ie ate izing t o A ether' bi e 9 t -ii nt e smP vide an oil burner having a rotor device for 10 atomizing: the ;oil ;and -.deli-vering the same wvisi n for; supplying the oil ire-mi. a source of; supply,; together withameans for furnish ;,1n-g.;, a; supply; oi. air to; complete eombustion 1 of t he atorniz er oil-"delivered to thefire -pot.

Additional advantages f;the construction 7 will :beapparent from the-followingdetailed w description thereof, taken in-eonneetion with the; accompanying drawings, in which -Fig. 1' -is a plan View of the apparatus. Fig, 2 is, a;.side elevation.

Eig; 3 is aside elevationshowing the burn err-structure in. section.

-F ig. '4; is an enlarged vertical section through the burner.

ig. 5 is a verticalsectiontaken substantially on the line 5-5 of Fig. 4.

Asillustrated in the drawings; the burner proper includes a firepot 1: arranged on suit- ;able supportsZformountingWithin the com- -busjtion chamber-ofa heating element. 'T'he fire pot includes a bowl-shaped-easting 3;; and

-;a-,]ining memberzl, the member-A having an 1 inverted truncatedconical wall .5 and, a hori- 35 zontalgifiange- 6 that fits 4 over and rests upon -the;up,per edge of thecastingi3. The lower edge of the-wall 5terminates above-the-vbottem-wall of the-castingfi, leaving an air space between the lower edge ofthe-walle A0 andthebottom ofthe casting-fi. Q'llhe botitom w all of the casting: 3 has; an axialopen- -ing,i andmrranged-beneath the openingisa semi-cylindrical casting 7 constituting-en oil chamber. At the sides ofthexcasting'i; and

45; atright angles to the axis thereof said casta ing carries integral extensions -.8 :formin-g ,ehambers 9- runningparal-lel with :the axis of the casting 7. p

The space between the innerqface-of the so; casting 3 and the inner face of the walli15 forms a circular chamber 110,- and between the ,chamber: 10 and each of the chambers 9 there are openings 11 forming ineansof communiw I cationbetween the chamber 10;and.-thechan1- 65 hersr9. The alls between the chambers?!) andthe interior .ofthe casting 7-have open- 126, 51925. nserial "N0. 1 4,737.

ings 12 constituting passageways from the chambers 9 to pthe i interior of the chamber -tf@ .me i y th s ing 7.

At the bottomofithe casting 7-,is azscrew plug' 13 for draining and cleaning out the 1 ehamberyformed -by said. casting,;.- ar 1d.;- in; the enter end .Wall of said casting is a screw plug -l lfso that accessr rnaybe hadto-thezinterior t ieQ amb -f nnQ by th ca tingeMatched against thefo face tot-the opposite end wall of the casting" 7 is a cylindrical member 15; that eonstitutes an. oil delivery passage'to the chamber formed by the=. easting? and thatalse supports; hearings .16. A shaft. 17 extends inwardly through the member. li and. into the ichamber formed by the easting 7 1 and; -:sup,ports at itsinner, .end a rotor that-includes aisolid cylindrical hub 18 having integrally formedradial ri;bs;19 arranged; atspaeed intervals, thereby: forming ,itherehetween parallelseries of; grooves. The edges of the ribs; 19 are preferably knurled or liQughened. flher0tor-is-rigidly supported-by theshaft a; 17- .whichpasses through the axis of the 1 hub 18 and held in place by a nut 20ihaving threaded; engagement with-the end of the v shaft 17. Age ess to I the. nut-'lfor mounting ,the rotor aipon the; shaftmay be had; through the. opening in whichathe screw: plug l l is mounted. The extreme-diameterOftlm rotor ;is such that When-unounted axially ot the casting? the lower-edge of the rotor-will extend' to a point 1 adjacent, to the 'bottom of the casting and the upper: edge of the rotor will extend above the lower edge of the The oil; entering thevmember 15;. is; :delivered inwargdly to the chamber formed by the oasting; Z and SelY S{ also to lubricatefthe bearings l6 ifon-the shaft 17. 'i'llheiouter, end of the; member -15 is provided with a @stufling box 21 to qpreyent gthe; passage of oil. ,0utwardly-Athrough-theLend of said member or around the shaft '17 thitti extends mtherethrough 'llhe io il delivery system for supplying oil to the oilehamber of thebu-rnen includes an oil'r supply pipe 22 connected withany zsuitableysoureegofisupply, :thasupply pipe 22 I leading; ;to; an oili lpu-mp 23;- of anye desired design-o type- A, pipeae ext nds from the oil pumpandris-conneeted witlra pipe 25 by a 1T-fittingQ26, the pipei 25 extendingtfornrdly trom tsuconneetion with :thenp lpe r24 rand :by 1eansbfaa righ i'3l1g1edYCOnII8QtlOn 27 connects into the side wall of the member 15.

The pipe 25 is equipped with a control valve 28 preferably of the dial control type so as to regulate the passage of oil therethrough to the oil chamber. An oil pressure gage 29 may be inserted in the line between the dial control valve 28 and the delivery pipe from the pump. During the normal functioning of the device a constant supply of oil under regulated pressure is delivered to the member 15 through which it flows inwardly to the oil chamber.

The oil chamber is provided with an oil overflow pipe 30 that is connected into the side of the casting? at the level of the axis of the member 15. Thus a constant feed of oil to the oil chamber maintains an oil level slightly below the opening into the overflow pipe, because of the fact that the delivery opening to the oil chamber is on a plane slightly lower than the lower edge of the opening into the overflow pipe. In normal operation the shaft 17 is rotated at a relatively high rate of speed causing the rotor to revolve in the oil chamber and, by centrifugal action of the ribs of the rotor operating in the body of oil, divides the oil. into small particles thoroughly atomizing it and delivering it into the fire pot, where it is mixed with air, as will be hereinafter described, and burned. Due to the agitating action of the rotor any grade of fuel oil may be utilized in the burner and produce efficient results.

If,-for any reason, theconsumption of oil from the oil chamber is not maintained, or an over supply of oil be delivered to the oil chamber, the level of oil will rise to a point where it will overflow into the passage 30, the end of the passage 30 being arranged to discharge into a bucket 31 carried by a lever 32 of an automatic drip valve 33 interposed in the pipe 25. The valve 33 is of known construction and is designed to operate to close the passage 25 when a predetermined quantity of oil has discharged from the overflow pipe 30, thus shutting 05 the delivery 'of oil to the oil'chamber. When this occurs,

by reason of the continued action of the oil pump, a back pressure will be built up in the passage 25 against the closed valve 33 and will be carried away from the system and back to the source of supply through a pipe 34: connected into the T-fitting 26 when the pressure operating valve 35 is opened. The valve 35 is of known type, commonly called a pressure reducer valve, and is designed to open and permit the back flow through the pipe 34 when a predetermined back pressure is built up after the valve 33 is closed.

The system for delivering air to the fire pot includes a blower 36 and an air conduit 37 that extends from the blower forwardly and enters through the wall of the casting 3and into the chamber 10. A portion of the air pressure delivered to the chamber 10 passes across the bottom of the fire pot into the space between the lower edge of the wall 5 and the bottom of the casting 3, and a part of the air is by-passed downwardly through the openings 11 into the chambers 9 and across the oil chamber as it is emitted from the openings 12, the openings 12 being at an elevation slightly above the normal level of oil maintained in the oil chamber.

The arrangement, thus described, for delivery of air provides efficient means for thoroughly mixing the atomized oil with air, forming a highly combustible mixture that develops a high heat and results in substantially complete combustion of the fuel.

It will be noted that the shaft 17 constitutes a power shaft for driving the rotor of the pump, the rotor of the blower and the rotor for atomizing the oil, the axes of said rotors being arranged in alinement and the shaft 17 extending axially thereof so that the whole apparatus may be driven from a common source of power such, for instance, as a motor M arranged at and connected with the outer end of the shaft 17.

I am aware that the invention may be modified in numerous details without departing from the spirit and scope thereof. I do not limit myself unessentially, therefore, to the detailed construction shown and clescribed but contemplate such variations as may be within the scope of the appended claims.

hat I claim and desire to secure by Letters Patent is 1. An oil burner comprising an oil chamber, a fire pot above and opening into said chamber, a wall within the fire pot having its lower edge above the bottom of the fire pot, arotor in said chamber having its periphery above the plane of the lower edge of said wall in the fire pot, means for admitting air between said wall and the wall. of the fire pot, and means for conducting air'int-o said chamber. 7

2. An oilburner comprising an oil chamber, a fire pot opening into the oil chamber, a rotor in the oil chamber having its upper side extending into the fire pot, an inclined wall in the fire pot and spaced from the wall of the lire pot, means for admitting air into the space between the wall of the fire pot and said inclined wall, and means for conducting the air from said space into the oil chamber. V

3. An oil burner comprising a fire pot having a side wall and a bottom wall, an oil chamber below and opening through the bottom wall of the fire pot, rotor mounted on a horizontal axis in said chamber, a series of circmnferential ribs on the rotor eXtending upwardly into the fire pot, means forming an air space in the fire pot, and means for conducting air from said space'into said chamber.

4. An oil burner comprising an oil chamber, a fire pot above and opening into said chamber, a wall within the fire pot having its lower edge above the bottom of the fire pot, a rotor in said chamber having its pe riphery above the plane of the lower edge of said wall in the fire pot, means for admitting air between said wall and the wall of the fire pot, means for conducting air into said chamber, and means for maintaining an approximately uniform quantity of oil in said chamber.

5. An oil burner comprising an oil chamber, a fire pot opening into the oil chamber, a rotor in the oil chamber having its upper side extending into the fire pot, an inclined wall in the fire pot and spaced from the wall of the fire pot, means for admitting air into the space between the wall of the fire pot and said inclined wall, means for conducting the air from said space into the oil chamber, and means for maintaining an approximately uniform quantity of oil in said chamber.

(3. An oil burner comprising a fire pot having a side wall and a bottom wall, an oil chamber below and opening through the bottom wall of the fire pot, a rotor mounted on a horizontal axis in said chamber, a series of circumferential ribs on the rotor extending upwardly into the fire pot, means forming an air space in the fire pot, means for conducting air from said space into said chamber, and means for maintaining an ap proximately uniform quantity of oil in said chamber.

7. An oil burner comprising an oil chamber, a fire pot above and opening into said chamber, a wall within the fire pot having its lower edge above the bottom of the fire pot, a rotor in said chamber having its periphery above the plane of the lower edge of said wall in the fire pot, means for admitting air between said wall and the wall of the fire pot, means for conducting air into said chamber, a pipe for conducting oil into said chamber, and a pipe for conducting oil from said chamber to prevent an accumulation of an excess amount of oil in said chamber.

8. An oil burner comprising an oil chain her, a fire pot opening into the oil chamber, a rotor in the oil chamber having its upper side extending into the fire pot, an inclined wall in the fire pot and spaced from the wall of the fire pot, means for admitting air into the space between the wall of the fire pot and said inclined wall, means for conducting the air from said space into the oil chamber, a pipe for conducting Oll into said chamber, and a pipe for conducting oil from said chamber to prevent an accumulation of an excess amount of oil in said chamber.

9. An oil burner comprising a fire pot having a side wall and a bottom wall, an oil chamber below and opening through the bottom wall of the fire pot, a rotor mounted on a horizontal axis in said chamber, a series of circumferential ribs on the rotor extending upwardly into the fire pot, means forming an air space in the fire pot, means for conducting air from said space into said chamber, a pipe for conducting oil into said chamber, and a pipe for conducting oil from said chamber to prevent an.accui'nulation of an excess amount of oil in said chamber.

10. An oil burner comprising an oil chamber, a fire pot above and opening into said chamber, a wall within the fire pot having its lower edge above the bottom of the fire pot,

a rotor in said chamber having its periphery above the plane of the lower edge of said wall in the fire pot, means for admitting air between said wall and the wall of the fire pot, means for conducting air into said chamber, a pipe for conducting oil into said chamber, a pipe for conducting'oil from said chamber to prevent an accumulation of an excess amount of oil in said chamber, and means operated by the oil passing from said second pipe to prevent fiowof oil through said first pipe.

11. An oil burner comprising an oil chamber, a fire pot opening into the oil chamber, a rotor in the oil chamber having its upper side extending into the fire pot, an inclined wall in the fire pot and spaced from the wall of the fire pot, means for admitting air into the space between the wall of the fire pot and said inclined wall, means for conducting the air from said space into the oil chamber, a pipe for conducting oil into said chamber, a pipe for conducting oil from said chamber to prevent an accumulation of an excess amount of oil in said chain ber, and means operated by the oil passing from said second pipe to prevent flow of oil through said first pipe.

12. An oil burner comprising a fire pot having a side wall and a bottom wall, an oil chamber below and opening through the bottom wall of the fire pot, a rotor mounted on a horizontal axis in said chamber, a series of circumferential ribs on the rotor extending upwardly into the fire pot, means forming an air space in the fire pot, means for conducting air from said space into said chamber, a pipe for conducting oil into said chamber, a pipe for conducting oil from said chamber to prevent an accumulation of an excess amount of oil in said chamber, and means operated by the oil passing from said second pipe to prevent flow of oil through said first pipe.

HARRY R.- WVALKER.

Hit) 

